A
Anonymous
Mar 23, 2026
Rating: 5/5
Reliable Multiplexer
Used in a commercial prototype. No failures so far.
Description
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Development Boards & Control Boards |
| Origin | - |
| Chip Model | TCA9548A |
| Supply Voltage | 2.3V to 5.5V |
| Interface Type | I²C / SMBus |
| Channel Count | 8 Independent Channels |
| PCB Size | 50mm x 35mm |
| Mounting Holes | 4 x 3mm |
| Product Weight | 15g |
| Operating Temp | -40°C to 85°C |
| Compatibility | Arduino, Pi, ESP32 |
| In The Box | 1x Board, 1x Header |
5 reviews
A
Anonymous
Mar 22, 2026
Rating: 5/5
Great for Learning
Helped me understand I2C addressing better. Easy to use.
A
Anonymous
Feb 28, 2026
Rating: 5/5
Clean Design
PCB quality is high. Traces look well done.
A
Anonymous
Feb 21, 2026
Rating: 4/5
Good but needs headers
Board works well. Just note you need to solder the pins yourself.
A
Anonymous
Jan 24, 2026
Rating: 5/5
Works as expected
Expanded my I2C bus without issues. Great for multiple sensors.
5 FAQ
Q: What is the max frequency?
A: It supports standard and fast mode I2C speeds up to 400kHz.
Q: Does it reset on power loss?
A: Yes, channels default to inactive upon reset or power loss.
Q: Are there status LEDs?
A: No, this board does not include status indicator LEDs.
Q: Is the address hardcoded?
A: No, A0-A2 pins allow configuration of the I2C address.
Q: Can I use this with 5V logic?
A: Yes, the device supports 2.3V to 5.5V voltage ranges.
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